
abstract class shape{
    abstract void shapes();
    public void show()
    {
        System.out.println("我可以被实例化");
    }
}
class draw extends shape{
    @Override
    void shapes() {

    }
}
public class TextDemo {
    public static void main(String[] args) {
        shape draw1 = new draw();
        draw1.shapes();
        draw1.show();
    }
}
